Is it possible for and etherswitch module on a 3745 or 3725 to the fastethernet ports as routers ports ?
Or use vlan from the etherswitch module to make the 37.. between them ?
No you cannot use them as routed ports
3745-A(config-if)#ip address 10.1.1.1 255.255.255.0
% IP addresses may not be configured on L2 links.
The following page should help as well